Origin of Vibrations in Strings
There have been claims that String theory solves many
problems of the universe and could lead us to a unified theory. To
my knowledge, the theory states that elementary particles are
created by 2D strings vibrating at different frequencies... My
question is, what causes them to vibrate AND what causes them to
vibrate at different frequencies?
To my knowledge, "string theory" is far from being a settled issue. There
seem to be as many opponents as proponents. I do not think the dimensionality
of the "strings" is at all settled. And some opponents claim that the theory
has never made a testable prediction. It seems to me that it is still a
topic for theoretical physicists and not for us mere mortals to yet enter
into the fray.
I hope you get an answer from someone who works more closely in theoretical
physics, but here is my understanding.
There really are not any vibrating strings, it is more the solution to a
mathematical equation. It is also a model to which Physicists can refer
when discussing the issues. (We really do not know what the atom is, but we
had the Niels Bohr planetary model of the atom that enabled scientists to
discuss and experiment against, that is until Max Planck introduced Quantum
Physicists chase down the ultimate particle in mathematical equations and
then they seek experiments that re-enforce or destroy the different
theories. So far the chase has led down this ladder:
Sub Atomic Particles
Fermions vs Bosons
Vibrating Strings is as far as the theories go to date, but I am sure
somebody, somewhere out there thinks they have a better idea.
So far as I know, experiment data is available to prove the existence of
quarks, but Super String theory is too new. If it is a blind alley, it
will not be the first time science has pursued wrong answers, like bleeding
people to balance the blood to cure disease.
Your questions are for the next generation of Physicists to discover. The
best reference I can find is a book called "The Elegant Universe" by
Professor Brian Greene.
Good luck and sincere regards,
PS One of the intriguing things about the equations is that the solution to
the equations requires 11, or 12 dimensions, suggesting that parallel
universes exist. Maybe you can find one.
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Update: June 2012